← Washington knife laws›Local Knife-Law Preemption

Washington Local Knife-Law Preemption (2026)

Conditional: No knife preemption: RCW 9.41.290 occupies only the field of firearms regulation, so localities (e.g., Seattle's fixed-blade limit) may regulate knives.

ConditionalVerified Jul 7, 2026

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Local Knife-Law Preemption in states bordering Washington

The same rule in each neighboring state LawLert has verified, from that state’s own official source.

IdahoPermitted
Yes — Idaho Code 18-3327 (eff. July 1, 2024) bars cities, counties and political subdivisions from enacting any ordinance, rule or tax on knives; conflicting local laws are void.
Verified Jul 7, 2026 · Source: legislature.idaho.gov · Full Idaho rule →
OregonConditional
Oregon's weapons preemption (ORS 166.170) covers only firearms, not knives, so cities like Portland may enact their own knife ordinances.
Verified Jul 7, 2026 · Source: oregonlegislature.gov · Full Oregon rule →

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